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Support Article

Multipart PDF sent as a binary instead of base64 format



The Pega application does not send a multipart or form-data REST request with a document in the base64 encoded format (as set in the pyAttachValues property) along with a JSON request. Instead, the PDF is sent in the binary format.

Error Messages

Not Applicable

Steps to Reproduce

  1. Populate the pyRequestAttachmentPage with the below properties:

    pyAttachValues – This contains the base64 encoded string of the PDF
    pyAttachNames – This is set to the form-data element name
    pyAttachFileNames – This is the file name
    pyAttachTypes – This is set as multipart or form-data

  2. Create a REST-Connector with a POST request configured to send a JSON request.

Root Cause

The pyAttachTypes was set as 'multiform/form-data' in the pyRequestAttachmentPage.


Perform the following local-change:
  1. Set the pyAttachTypes as 'text/plain'.
  2. Removing the pyAttachFileNames setting.

Published August 15, 2019 - Updated December 2, 2021

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